The 1990 Kawasaki GL1500 is a legendary touring motorcycle known for its comfort and power. A key feature contributing to its rider-friendly nature is the cruise control system. However, understanding its operation, troubleshooting potential issues, and knowing its limitations are crucial for a safe and enjoyable riding experience. This guide delves into everything you need to know about the cruise control on your 1990 Kawasaki GL1500.
How Does the Cruise Control on a 1990 Kawasaki GL1500 Work?
The cruise control system on the 1990 Kawasaki GL1500 is an electromechanical system. It works by using a vacuum-operated actuator to control the throttle cable. Once activated, the system maintains a constant speed, relieving the rider from constantly manipulating the throttle. The system engages above a certain speed (usually around 25 mph), and disengages automatically when the brakes are applied or the throttle is twisted.
Key Components:
- Cruise Control Switch: Located on the handlebar, this allows you to engage, disengage, and adjust the set speed.
- Vacuum Actuator: This mechanical component uses engine vacuum to pull the throttle cable, maintaining the set speed.
- Throttle Cable: The standard throttle cable is connected to the vacuum actuator.
- Wiring Harness: Connects the switch to the actuator and other relevant components.
Troubleshooting Common Cruise Control Problems on a 1990 Kawasaki GL1500
Over time, various issues can affect the functionality of your cruise control. Here are some common problems and their potential solutions:
My 1990 Kawasaki GL1500 Cruise Control Won't Engage:
This could stem from several reasons:
- Low Vacuum: A vacuum leak in the engine or a faulty vacuum actuator can prevent the system from engaging. Inspect all vacuum lines for cracks or damage. The actuator itself might also need replacement.
- Faulty Switch: A malfunctioning cruise control switch can interrupt the electrical signal. Check the switch for damage or corrosion. Testing the switch with a multimeter might be necessary.
- Blown Fuse: A blown fuse in the electrical system can cut power to the cruise control. Check your owner's manual to locate the relevant fuse and replace it if necessary.
- Wiring Issues: Damaged or corroded wiring can prevent proper communication between the switch and the actuator. Carefully inspect the wiring harness for any breaks or corrosion.
My 1990 Kawasaki GL1500 Cruise Control Is Erratic:
If the cruise control is maintaining speed inconsistently, consider these possibilities:
- Vacuum Leaks: As mentioned above, leaks in the vacuum system are a major cause of erratic performance.
- Worn Actuator: A worn-out actuator may not consistently control the throttle cable.
- Throttle Cable Issues: A sticky or frayed throttle cable can interfere with the actuator's function. Lubrication might help, but replacement may be necessary.
My 1990 Kawasaki GL1500 Cruise Control Doesn't Disengage:
This is a potentially dangerous situation. Immediately address this by:
- Manually Disengaging: Use the cruise control switch to disengage the system.
- Applying the Brakes: Braking should automatically disengage the cruise control.
- Twisting the Throttle: Manually applying throttle will override the cruise control.
If the system fails to disengage even with these actions, there's likely a serious mechanical or electrical fault that needs immediate professional attention.
Is it Difficult to Repair the Cruise Control on a 1990 Kawasaki GL1500 Myself?
The complexity of repairs depends on the issue. Simple checks, like inspecting vacuum lines and fuses, are straightforward. However, replacing the actuator, switch, or repairing wiring requires some mechanical and electrical aptitude. If you're not comfortable working with motorcycle systems, seeking professional help from a qualified mechanic is recommended.
Where Can I Find Parts for My 1990 Kawasaki GL1500 Cruise Control?
Parts for older motorcycles can sometimes be challenging to find. You can try contacting Kawasaki dealerships directly, checking online motorcycle parts retailers, or searching for used parts from salvage yards or online forums dedicated to Kawasaki GL1500 owners.
This guide provides a comprehensive overview of the cruise control system on your 1990 Kawasaki GL1500. Remember that safety should always be your priority. If you are unsure about performing any repairs yourself, consult a qualified mechanic. Safe riding!
